My Parents Never Believe Me. Any Suggestions?
To get your parents to believe you, you must first ask why they don’t trust you. Generally, it is because they have discovered that you have lied about something in the past. Lying has terrible consequences. If someone has lied to you, how do you know when they’re lying or telling the truth?
To get your parents to believe you, ask them to forgive you for any and every time you have lied to them in the past. And don’t stop with just asking forgiveness for the lies you’ve said with your mouth. Also ask forgiveness for the lies you’ve said with your actions—like having a bunch of friends over at the house when it was forbidden.
Second, learn to admit when you blow it. Nobody believes you always live a perfect life. So when they hear you volunteer the fact that you blew it, but now you are sorry for what you did, they will believe you much more quickly than if you never admit your shortcomings and failures.
The Teenage Q&A Book, page 13.